There's currently no raw_ostream &operator<<(SimpleValueType); provided by LLVM. It could be added by refactoring utils/TableGen/CodeGenTarget.cpp:getEnumName, but that's much more work than fixing the build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266627 91177308-0d34-0410-b5e6-96231b3b80d8